On Mon, Jul 24, 2017 at 07:01:59PM -0400, Dennis Zhou wrote: > From: "Dennis Zhou (Facebook)" <dennisszhou@xxxxxxxxx> > > The reserved chunk arithmetic uses a global variable > pcpu_reserved_chunk_limit that is set in the first chunk init code to > hide a portion of the area map. The bitmap allocator to come will > eventually move the base_addr up and require both the reserved chunk > and static chunk to maintain this offset. pcpu_reserved_chunk_limit is > removed and start_offset is added. > > The first chunk that is circulated and is pcpu_first_chunk serves the > dynamic region, the region following the reserved region. The reserved > chunk address check will temporarily use the first chunk to identify its > address range. A following patch will increase the base_addr and remove > this. If there is no reserved chunk, this will check the static region > and return false because those values should never be passed into the > allocator. > > Lastly, when linking in the first chunk, make sure to count the right > free region for the number of empty populated pages. > > Signed-off-by: Dennis Zhou <dennisszhou@xxxxxxxxx> Reviewed-by: Josef Bacik <jbacik@xxxxxx> Thanks, Josef -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
